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Wireshark may misunderstand a MAC frame (including ARP) whose length is 64 bytes or more, as a frame with the FCS field. This patch fixes the issue by modifying lengths of pad fields for ARP. This patch modifies lengths of pad fields as follows: - Add 18 bytes for MAC frames (including ARP, without VLAN/MPLS/PBB). - Add 18 bytes for MAC frames related to POP_MPLS/POP_PBB. Reported-by: Arne Goetje <arne_goetje@accton.com> Signed-off-by: Yuichi Ito <ito.yuichi0@gmail.com> Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>